US1410156A - Lumber trimmer - Google Patents

Description

J. H. BERRVYMAN. LUMBER TRsMMER.

APPLICATION man APR. 19. 1920.

1 ,4 1 O, 1 5 6 Patented Mar. 21', 1922.

3 SHEETS-SHEET l.

y M #Trai/ver -I. H. BE'RRYMAN.

LUMBER T RIIVINIER. APPLICATION FILED APII. I9, m2o.

1,410, 156. Patented Mar. 21, 1922.

3 SHEETS-SHEET 2.

@53 @VC/Cofano? J. H. BERRYMAN.

LUMBER TRIMMER.

MPM/mon FILED APR. 19. 1920.

Patented Mar. 21, 1922.

3 SHEETS*SHEET 3.

UNTED STATES JAMES H.VBERRYMAN, 0F SNGQUALMIE FALLS, XVASHINGTON,

LUI/[BER TRIMMER.

Specification of Letters Patent. Patnted WI-313 21, 1922 Application ledrApril 19, 1920. Serial No. 374,845.

To all wim/,fz t may concern:

Be it known that I, JAarns H. BERRYMAN, a citizen of the United States, and resident oli Snoqualmie Falls, county of King, State of lVashington, have invented certain new and useful Improvements in Luiriber Trimmers, of which the following isa specification.

My invention relates to improvements in lumber trimmers, and more particularly to a device of that character wherein a. horizontally suspended rack, comprising a plurality or' radially extending carriers whereon lumber may be placed for trimming, is driven rotatively to bring the boards successively into engagement with a continuously driven trimming saw.

The principal object of the invention isvto improve upon machines now generally in use for doing this work, by the provision of a relatively inexpensive machine, which may be operated at a comparatively small cost, which will greatly expedite the passing of lumber to the trimming saw, which will provide for quick and accurate placing of the lumber so that it will be trimmed in the clear at standardized lengths and which includes means whereby defective parts trimmed from the boards may be out into suitable lengths Jfor stove use. l

It is also an ob]- ect of the invention to provide in connection with the rotating rack, a tripping means whereby the boards may be automatically discharged onto a conveyer after their ends have been trimmed, .and carried from the trimming room.V Also to provide means for yieldingly holding the trimming saw in Yfunctional position and serving as a safety appliance that will pervmit the saw to disengage itself from the lumber when occasion is necessary toprevent choking.

ln accomplishing these and other objects of the invention, l have provided the improved details ofconstruct-ion, the preferred forms of which are illustrated in the accompanying drawings, wherein:

Figure 1 is a plan view oi trimmer constructed according to the present invention. i

Figure 2 is a side elevation of the same.

Figure B is a detail perspective vlewof one of the carrier arms, particularly illustrating the trippingy mechanism for discharging a rotary rack inf-:angoli` a driving shaft 2 that is fixed revolubly within vertically alined bearings 3 and l ixed to supporting beams 5 and 6 respectively; the beam 6 preferably being suspended from the beam 5 by means of hangers 7 and 7 at its opposite ends.

The rack 1 comprises a plurality of carriers 8 that extend radially as the spokes of a wheel from the hub portion of the rack, and are adapted to be revolved in a horizontal plane by means of the lshaft 2 which is driven from a motor Ydriven shaft 9 through connecting' gears as indicated at 10.

In its preferred construction the: rack 1 consists of six oli' the carriers 8. These are equally spaced apart and each consists of a plank 12 that is fixed, at its inner end, edgewise between circular, horizontally spaced hub plates 14 and 15 that are secured together, and to a hub casting wherein the shaft 2 is fixed, by means of a series of bolts 16. Fixed longitudinally to the lower edges of the planks 12 areother planks 17 which project atopposite sides of the planks 12 to form shelves 18 and 18 whereon boards may beplaced to be carried to and from the trimming saw as is presently described.

The rotating rack is supported clear of the door, and operating thereunder at one side, is a conveyer comprising chains 19 which are'actuated along a supporting structure 2O to first bring the boards to be trimmed to the trimming rack, and after they have been trimmed thereby, to carry -the'clear pieces from the trimming room. In a device of this character, the person employed to put the boards onto the rotating rack, moreV commonly known as the spotter stands at the right of the conveyer and close to the rack as it is shown in Figure 1;

At thev side of the rack opposite the place where the boards are loaded thereon, is a cut off or trimming saw 24, which in this case is of the circular type and is fixed on a shaft 25 that is carried by bearings 26 provided at the outer ends of a U shaped hanger arm 27 that is pivotally fixed by a bolt 28 to the lower end of the hanger timber 7; the saw being suspended in such manner that it may be moved vertically in an are about the bolt 28. y

A pulley 29 is fixed on the shaft 25 between the supporting bearings and a driven pulley 29 ismounted'adjacent the upper end of the hanger timber 7 over which a belt 30 operates to drive the saw. A weight 31 is suspended by a cable 32 that extends downwardly from the weight, over pulleys 33 and 34 and then downwardly and is attached at its lower end `to the inner end of the pivotally mounted `hanger 27, in such manner that the weight causes a driving tension to be placed on the belt and the saw to beA yieldingly held against the piece being trimmed. t

When in normal position the saw is suspended so that theouter ends of the carriers Will )ass close thereto and the ends of the boar s carried by and projecting beyond the ends of the carriers will be trimmed oif b y the saw as they are advanced to the cutinnig point. y

t the side of the rack 1 opposite the con` veyer are receivin racks 35, 36 and 37 the racks 36 and 37 eing placed at opposite sides of the cut-oif saw and the rack 35 being at the outside of the rack 36. Thislatter rack comprises a top rail 39 which is stepped to provide a series of stops 40 against which the ends of boards may be placed in order to gau e their lengths when being trimmed ott' at t eir opposite ends. The rack 37 is so located that the ends of the carriers 8 pass thereover as the-rack 1 revolves and it comprises a stationary frame structure having a horizontal top rail from which bars 41 are extended to catchi trimmed ott pieces as is resently described.

he central rack 36 comprisesa tramework that is fixed t0 the floor by means of hinges Ias shown at 43, in ,such manner that its upper portion may be moved transversely of the row of racks. This movement is effected by means of a toot pedal 44 that Y is mounted at one end in a :floor plate 44. The pedal has an upwardly turned end portion 144 that is connected slidably `at its u per end to the lower end of a lever 46 wlhich in turn is pivotally mounted upon a post 146 secured to the floor. A link 147 connects the upper 'end of the lever with the upper rail 148 of the rack 36in such manner that pressing downwardly on the outer end of the pedal 44 will cause the rackto be actuated toward the saw 24 and boards that may be placed upon the bars 47 will be carried against the saw'24. ANormally the rack `nected by rods 67 whereby 36 is held out of alinementwith the racks 35y and 37 and in position that it may catch the 'ends trimmed from boards carried on the on the said bars maybe moved to be cut into y short lengths suitable for stove use.

In using the rack 1, assuming that it is being rotated in the direction indicated by the arrow in Figure 1, boards brought in by the conveyer chains 19 are taken up by the spotter and placed on the shelves 18 atV the forward sides of the carriers, and in order that they may b'e cut at standardized lengths, theirl inner ends are lplaced adjacent one of a plurality of proper y are secured to and extend outwardly from the forward faces of the planks 12, so that the outer ends of the boards extendbeyond the end of the carriers.

As the rack. 1 rotates, the extending ends of boards placed by the spotter on the carriers are brought into contact with the trimming saw 24, and the waste ends are cut therefrom and are dropped onto the cross bars 47 of the rack 36, while the clear part of the boards left on the carriers are carried on around toward the starting point and are delivered as will now be described onto the conveyer and carried from the room.

The trippingtmechanism for discharging the "boards .from the carriers onto the conveyer comprises a series o arcuatelyy swinging arms 62 that extend laterally from the lower ends of vertical rods 63 that are revolubly supported. at spacedy apart intervals along the length of the Aplanks l12. The arms 62 have upturned portions 64' at their outer ends which extend upwardly through arcuate slots 65 in the planks 17l and are adapted to swing outwardly, when the shafts 63 are revolved, to engage boards that may be on the shelves 18, to push the latter. from located. stops 60 that the carriers, At'their upperv ends each of f the shafts 63 has'a: laterally extending crank arm 66 and the arms of each carrier are conthey may be ac tuated simultaneously.v i t Vits outer end each rod 67 has au upturned end portion 66 which is adapted to be brought into engage ment, by the revolving of the rack, with an Vinwardly directedv flange 69 of a plate 70 secured to the under side of the beam V6 at its end opposite the cut-olrsaw, so that the rods will be actuated inwardly to revolve the rods 63 and cause the` boards to be dis-- chargedonto the conveyer at this point. As

t soon as a carrier has passed the plate 7 0, the

. fixed to the inner ends of the rods 67 and to the beams 12 in such manner that the rods are urged outwardly at all times and the ends Get of the arms 62 are normally retained adjacent the plank 12.

Assuming that it is desired to trim a waste portion from near the centery of a board, the latter is placed on a carrier oif the rack 1 as it revolves, with the waste portion extending beyond the end of the carrier. As the rack revolves, the carrier moves the board against the cut-oit saw Q4 and the extending end portion is cut oil and the part in the clear 'remains on the carrier to be later discharged onto the conveyer. The end of the board which has Vbeen cut off and dropped onto the rack 36 is then taken up by an operator, vwho stands at the side of the rack 36, and it is positioned on the rack for trimming out the `(vaste and it is moved toward and against the cut-oil saw. 55. by the inward movement ot the table 36 effected by depression oi' the loot pedal et The waste piece trimmed out talls onto the rack 37 and the clear piece is then placed on an arm ot thek rotating rack and is delivered thereby onto the conveyer.

lhere there is no clear lumber to be taken from the part cut off, the waste end is let fall onto the bars of the rack 36, and in order that these waste ends may be moved against the saws 55 to be cut into short lengths, I have extended spikes downwardly through the outer ends of each of the carrier planks 17 which will engage a stop 76 fixed to the rack 37 in a manner that will cause that raclr to be moved inwardly against and the waste pieces thereon carried against the saws Also on the under side of each carrier plank 12 are fixed depending ngers 80 which are adapted to pass through slots 81 in the upper frame rail of the rack 37 and to engage the waste ends that are supported by the bars li7 so that these pieces will also be moved by the saws 55 to be cut into the short, stove lengths.

It is apparent that by the use ot a device of the character described, there is a great saving of labor, as two men can do what ordinarily is done by six to twelve men. It is further apparent that the simplicity ot construction provides a relatively inexpensive device wherein all the desired qualities of machines of this character are incorporated in a manner which will facilitate and expedite the trimming of lumber to all the standardized lengths.

I claim- 1. A lumber trimming device of the character described comprising, a driven trimming saw, a rotatably mounted rack comprising a plurality of horizontally and radially extended carriers whereon boards may be placed for trimming, and means for rotating the rack to successively advance the carriers and boards thereon to the trimming saw.

2. A lumber trimming device comprising, a circular driven trimming saw, a rotatably suspended rack comprising a plurality of horizontally and radially extending carriers adapted to support boards longitudinally thereon in trimming position, length gauging members located at spaced intervals along the carriers and means for rotating the rack to advance the boards against the trimming saw.

3. A lumber trimming device of the char-A acter described comprising in combination, a driven trimming saw, a rotatably suspended rack having a plurality of carriers eX- tending radially and horizontally therefrom whereon boards may be placed in position for trimming, means for rotating the rack to move the carriers successively past the trimming saw to effect the trimming of boards carried thereon and tripping means on the carriers for discharging the boards therefrom at a. predetermined point after the trimming has been done.

4. A lumber trimming device of the character described comprising in combination, a horizontally moving conveyer, a driven trimming saw, a horizontally rotating rack comprising a plurality of radially extending carriers adapted to pass closely above the conveyor and their ends to pass closely to the trimming saw and being adapted to support lumber in position to be trimmed thereon, means for rotating the rack to advance the boards on the carriers against the trimming saw and tripping means for discharging the trimmed boards from the carriers onto the conveyer. f

5. A device of the character described comprising in combination, a driven trimming saw, a rotatable rack at one side of said saw comprising a plurality of radially and horizontally extending carriers whereon lumber may be placed to be advanced against the trimmingsaw, stationary racks for receiving the ends cut from the boards advanced by the carriers, a plurality of closely spaced saws mounted adjacent the stationary racks and means mounted onfthe outer -ends of the carriers for engaging said pieces of boards to move them against the said spaced saws for the purpose set forth.

6. A device of the character described comprising in combination, a driven trimming saw, a rotatable rack at one side of said saw comprising a plurality yof radially extending carriers whereon boards may be placed to be advanced to the trimming saw, a tiltable table mounted at the opposite side of the cut-oil' saw for receiving the ends cut from the boards, a` saw shaft mounted below said table longitudinally therewith having saws closely spaced thereon, manual means for actuating the table 5 toward the saws to cause the board ends to be out into short lengths thereby, and mea-ns projecting from the ends of said carriers adapted to engage said tiltable `teible to toniatically aetuftte the sinne toward saws for the urpose set forth.

Signed at Ieattle, Washington, this '7th day of April, 1920.

YMinis H. BERRYMAN; Y

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